Spring-casing.



Patented Sept. 19,1911.

GO'IjOJZ. Henderson kg m UNITED STATES PATENT OFFICE.

GEORGE R. HENDERSON, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR T0 BALDWIN LOCOMOTIVE WORKS, OF PHILADELPHIA, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

SPRING-CASING.

Specification of Letters Patent.

Patented Sept. 19, 1911.

To all. whom it may concern:

Be it known that I, GEORGE R. HENDER- SON, a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented certain Improvements in Spring-Casings, of which the following is a specification.

My invention relates to certain improvements in means for handling heavy springs and springs having a great range of motion, which have to be compressed in order to be placed in position and, consequently, great care'must be exercised in removing these springs on account of the liability of the spring to be accidentally expanded or displaced when the retaining means has been detached.

The object of my invention is to provide a case for a spring of this type, which case will allow the spring to be readily handled when placing it in position or when removing it. This object I attain in the following manner, reference being had to the accompanying drawings, in which Figure l, is an end view of my improved spring casing; Fig. 2, is a sectional View through the case, showing the spring in position; Fig. 3, is a perspective view of one of the case sections; Fig. 4, is a sectional view showing the case and spring compressed, and Fig. 5, is a view of a modification of my invention.

AA are the two halves of the casing, each half being made in the form of a shell having a flange a. and extending from each flange is a series of projections a spaced apart a sufficient distance to allow the projections of the other section of the case to enter the space between the flanges. Each projection has a lip a extending outwardly and mounted between the lips of the opposite casings is a ring B, preferably of steel wire, and mounted in the casing is the coiled spring G, of any strength desired.

It will be noticed that the two sections of the casing are free to move toward or from each other; the outward movement of the sections being limited by the ring B, while the inward movement is limited by the spring itself.

It has been found in using heavy springs in which the free height is very great as compared to its solid or loaded height, that it is not only difficult to place the spring in position, but it is also dangerous, as the spring must be compressed to the proper height is less working height in order point where it is to be located. One example is the springs at the swivel joint of the flexible exhaust pipe in Mallet locomotives. In this swivel joint the springs have a free height of from twelve to fifteen inches, yet, when they are in position for the proper working of the device, the total than six inches. It is difficult to place these springs in position as they must be compressed by means of clamps and then the clamps have to be removed, while the spring is in its pocket.

By my invention, I can place a section of the case on each end of the spring in any suitable device and on compressing the spring by power the lips of one section pass the lips of the other section, the wire ring B is. then placed in position. Upon releasing the clamping means the spring will expand the casing until the lips a of the two casings clamp the wire ring between them, thus holding the spring against further ex pansion. This spring casing with the spring therein, can be readily located in position and the spring will yield under the load; thecasing not affecting the movement of the spring.

lVhen it is desired to remove the spring from the posit-ion in which it is located, the mechanism can be dismantled and the springcasing with the spring therein, can be quickly removed without the liability of an accident occurring due to the release of the spring.

It will be noticed in the construction above described that when the spring is compressed no part of the case projects at either end so that the casing is applicable to cavities having solid upper and lower surfaces and as each casing is preferably made with an enlarged opening (Z at the center the swivel, or other section, may extend through the spring and the casing.

In Fig. 5, I have shown a modification in which the spring is on the outside of the casing A and the lips a project inwardly; the ring B in on the inside of the casing.

I claim 1. The combination of a spring, a two part flanged casing; means for allowing the casing to move with the expansion and contraction of the spring; and a ring engaging the flange of each part of the casing whereby the outward movement of the parts is limited.

to apply it to the 2. The combination of a coiled spring, a two-part casing, each part having a flange, with projections spaced apart, the projections on one section of the casing entering the spaces between the projections of the other section of the casing, and a ring limiting the outward movement of the casing and the spring.

8. The combination of a coiled spring, a two-part casing, a series of projections on each casing spaced apart, the projections on one section of the casing alternating with the projections on the other section, each projection having a projecting lip, with a ring encircling the casing and located between the two series of lips, said ring limiting the outward movement of the spring and casings.

4. The combination of a spring, a casing Copies of this patent may be obtained for five cents each, by addressing the made in two sections, each section having an opening in the center and having a flange and projections forming continuations of the flanges, said projections being spaced apart, the projections on one section of the casing alternating with those of the other section, outwardly extending lips on the ends of the projections, with a ring mounted in the space between the two series of lips so as to limit the expansion of the spring, but allowing the spring to have free compression.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing wltnesses.

GEORGE R. HENDERSON.

WVitnesses:

M. E. SHUPE, TN. A. BARR.

Commissioner of Patents,

Washington, D. C. 

